/*
 * Copyright (c) 2023 OceanBase.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.oceanbase.odc.service.iam.auth.bastion;

import org.springframework.security.authentication.AccountStatusUserDetailsChecker;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsChecker;

public class BastionAuthenticationProvider implements AuthenticationProvider {

    private final UserDetailsChecker userDetailsChecker = new AccountStatusUserDetailsChecker();
    private final BastionUserDetailService bastionUserDetailService;

    public BastionAuthenticationProvider(BastionUserDetailService bastionUserDetailService) {
        this.bastionUserDetailService = bastionUserDetailService;
    }

    @Override
    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
        if (!supports(authentication.getClass())) {
            return null;
        }
        BastionAuthenticationToken bastionAuthenticationToken = (BastionAuthenticationToken) authentication;
        UserDetails ud = bastionUserDetailService.loadUserDetails(bastionAuthenticationToken);

        userDetailsChecker.check(ud);

        BastionAuthenticationToken result = new BastionAuthenticationToken(
                ud, authentication.getCredentials(), ud.getAuthorities());
        result.setDetails(authentication.getDetails());
        return result;
    }

    @Override
    public boolean supports(Class<?> authentication) {
        return BastionAuthenticationToken.class.isAssignableFrom(authentication);
    }
}
